We are planning a trip to Disney for Sat. Oct 29 - Sat Nov 5. There are several races scheduled on Friday the 4th (Mickeys Holiday 5K -Kids race in AK) and Sat the 5th (wine and dine 1/2 marathon Epcot) as well as Health I fitness Expo 3rd - 5th at espn center. Saturday won't interfere with our trip because we will leave that morning but I was wondering how crowded the parks will be on the other days. Will it only affect the parks that the races are in or will all parks be much more crowded? We were trying to pick a time with lower crowds and this has me concerned. Any advice would be appreciated.